AM_Nontronite Formula: Fe Si2 O6 H Name: Nontronite Unit cell: 5.277 9.14 9.78 90.0 101.0 90.0 , V=463.04 Space group: C12/M1 (12)

Dainyak L G , Zviagina B B , Rusakov V S , Drits V A , European Journal of Mineralogy , 18 (2006) p.753-764, Interpretation of the nontonite-dehydroxylate Mossbauer spectrum using EFG calculations, Locality: Garfield, Washington, USA, Sample: tv structure